EP0659619B1 - Arrangement de chauffage de pare-brise avec élément de chauffage électrique à résistance dans l'aire d'arrêt des essuie-glaces - Google Patents

Arrangement de chauffage de pare-brise avec élément de chauffage électrique à résistance dans l'aire d'arrêt des essuie-glaces Download PDF

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Publication number
EP0659619B1
EP0659619B1 EP94120266A EP94120266A EP0659619B1 EP 0659619 B1 EP0659619 B1 EP 0659619B1 EP 94120266 A EP94120266 A EP 94120266A EP 94120266 A EP94120266 A EP 94120266A EP 0659619 B1 EP0659619 B1 EP 0659619B1
Authority
EP
European Patent Office
Prior art keywords
windshield
grid
switch
parking area
wires
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94120266A
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German (de)
English (en)
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EP0659619A1 (fr
Inventor
William Knudsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Old Carco LLC
Original Assignee
Chrysler Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chrysler Corp filed Critical Chrysler Corp
Publication of EP0659619A1 publication Critical patent/EP0659619A1/fr
Application granted granted Critical
Publication of EP0659619B1 publication Critical patent/EP0659619B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/023—Cleaning windscreens, windows or optical devices including defroster or demisting means
    • B60S1/026—Cleaning windscreens, windows or optical devices including defroster or demisting means using electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/0475—Cleaning of wiper blades
    • B60S1/0477—Arrangement for deicing or for removing debris from wiper blades
    • B60S1/048—Arrangement for deicing or for removing debris from wiper blades with a heating device for the wiper parking position
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/031—Heaters specially adapted for heating the windscreen wiper area

Definitions

  • the present invention relates to arrangements for heating windshield wipers. More particularly, the present invention relates to arrangements for heating windshield wipers utilizing electric current.
  • windshield wiper blades can become frozen to the windshield of a motor vehicle when the wiper blades are in their parked position proximate the lower edge of the windshield.
  • the torque of the motor applied through a driving linkage for oscillating the wipers may be insufficient to overcome the force with which the wipers are adhered to the windshield.
  • the wiper blades may simply not move as the torque is applied which requires that the driver leave the car and manually break the adhesion between the windshield wiper blades and windshield. This is, of course, an undesirable aggravation.
  • the linkage which connects the windshield wipers to the motor may fail if the torque of the motor is too high or a fuse may blow, resulting in wipers which are inoperable.
  • Drivers who must use their vehicles immediately or who are impatient may then be tempted to drive without operating windshield wipers which is, of course, especially hazardous in winter when windshields can become covered with salt and sand, obscuring the driver's vision.
  • Patent 3,738,252 to Cardinale wherein a hot water radiator is disposed proximate the windshield wiper blade when the windshield wiper is in its parked position. Again, it takes time to heat the coolant to a level sufficient to begin melting ice during which time the driver may attempt to activate the windshield wipers before the ice is melted.
  • U.S. Patent 5,173,586 to Gold discloses positioning an electric heater on the outside of the windshield just below the wiper blade. This is, however, a complex relatively expensive arrangement wherein the heater for the wiper blade must be protected against moisture, wind and general environmental degradation due to exposure on the outside of the windshield.
  • the heater is subjected to engine heat as well as moisture, low temperatures and wind-induced pressure differentials, all of which combine to comprise its reliability.
  • the heater is subjected to the greatest environmental stress at a time when it is needed most and is thus more likely to fail at a time it is needed most.
  • EP-A-0013970 discloses, in one embodiment, heating wires arranged along a full width of the lower end area of the windshield. In another embodiment, EP-A-0013970 discloses heating wires arranged at less than the full width of the windshield and sandwiched between the windshield layers.
  • Reference EP-A-0 052437 discloses use of an electro-conductive coating (18) to heat the upper part of the windshield and an additional heating grid over substantially an entire lower area of the coated windshield.
  • Reference JP-A-2144247 discloses distinct heating wires for each of the wiper blades.
  • Reference GB-A-506700 is directed to window panes in general and discloses wire patterns covering the entire area of the window pane.
  • DE-B-2507037 discloses a heating arrangement for a rear windshield and single wiper blade combination where a heating grid includes a first section to heat the upper part of the windshield and a second section to heat where the wiper blade rests when it is not oscillating.
  • reference AT-A-375605 shows heating elements in contact with an inside surface of an automobile windshield so as to heat an entire lower portion of the windshield, including where side by side wiper blades rest when parked, and a power circuit for supplying current to the heating elements.
  • a windshield heating assembly including an automobile windshield having an inside surface and an outside surface including a parking area where a pair of windshield wiper blades rest when in a parked mode, a windshield wiper heater including an electric resistance heating element disposed in contact with said inside surface at an area aligned with said parking area of said outside surface, and a power circuit for supplying electric current connected to said heating element to melt ice or snow accumulated on said parking area around the windshield wiper blades, characterized in that the first of said wiper blades is disposed below the second of said wiper blades when in parked mode, and in that said heating element includes a grid local localized at the center of the windshield, said grid including three electric wires disposed in alignment with said parking area on said outer surface of said windshield so as to locally heat said parking area, the first of said wires being aligned with the lower windshield wiper blade (30), the second of said wires (44) being disposed between the lower and upper windshield wiper blades (30, 32), and the third of said wires (46) being
  • an automotive vehicle 10 which has a windshield 12 which isolates the interior environment 14 of the vehicle from the external environment 16.
  • the windshield 12 is fabricated of safety glass having an exterior panel 18 bonded to an interior panel 20 by a layer of adhesive 22.
  • the windshield 12 has an exterior surface 24 which is exposed to the rigors of the external environment 16 and an interior surface 26 which is generally protected from the external environment since it is exposed primarily to the interior environment 14.
  • a pair of conventional windshield wipers 30 and 32 have rubber or synthetic rubber blades 34 and 36, respectively, which wipe the outer surface 24 of the windshield 10.
  • the windshield wipers 30 and 32 are shown in their parked mode at the bottom of the windshield.
  • a conventional windshield wiper motor not shown
  • the wipers 30 and 32 oscillate to clean the outer surface of the window 24 but when the automotive vehicle is not being used, the windshield wipers 30 and 32 are in the position of Figure 1.
  • snow and ice tend to accumulate around the windshield wipers and can adhere the windshield wiper blades 34 and 36 to the outer surface 24 of the windshield. This may occur due to a snow and ice storm or perhaps may occur when water kept liquid by the operation of a defrosting system or the vehicles engine freezes when the vehicle is not being used.
  • an electric grid 40 is disposed in alignment with the parking area 38 on the outer surface 24 of the windshield 10 so as to locally heat the parking area.
  • the electric heating grid 40 is comprised of three wires 42, 44 and 46, each of which is in abutment with the back surface 26 of the windshield 10.
  • the wire 42 is aligned with the wiper blade 34 of the lower windshield wiper 30 while the wire 46 is aligned with the wiper blade 36 of the upper windshield wiper 32.
  • the wire 44 is disposed midway between the wires 42 and 46 so that the entire heating area 48 on the inside surface 26 of the windshield 10, disposed proximate the parking area 38 on the outside surface 24 of the windshield, is heated when the grid 40 is energized.
  • the grid 40 is localized at the center of the windshield 12 with the heating wires 42, 44 and 46 converging at ends 52 and 54 to busses 56 and 58, respectively.
  • the busses 56 and 58 have leads 60 and 62, respectively, which are connected to electrical power sources, as seen in Figure 3.
  • the busses 56 and 58 each extend proximate the lower edge 64 well out of the view of the driver and allow heat to be concentrated where it is most needed, generally in the area 48 where the windshield wipers 30 and 32 are parked.
  • the climate control circuit includes a rotary switch 80 which rotates between a number of positions including an off position 82 and a defrost position 84.
  • the heating grid 40 is energized and current flows through the lines 42, 44 and 46, heating the area 48 in the windshield.
  • the grid will remain energized to deice wiper blades 34 and 36 (see Figure 1).
  • the grid 40 comprising the electric wiper deicer may still be operated by switch 86.
  • the switch 86 includes a conventional timer 88 connected thereto which times out after 10 minutes, opening the switch 86 and interrupting current to the heating grid 40.
  • the heating grid 40 may be activated by either the climate control system 74 of the automotive vehicle or by a separate isolated switch 86.
  • denotion “ewd” means "electric window defrost” and the other denotions being self-explanatory.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Surface Heating Bodies (AREA)
  • Control Of Resistance Heating (AREA)

Claims (6)

  1. Ensemble de chauffage de pare-brise comprenant un pare-brise (12) d'automobile ayant une surface interne (26) et une surface externe (24) comprenant une zone de rangement dans laquelle deux balais (30, 32) d'essuie-glaces de pare-brise sont en appui en mode de rangement, un organe de chauffage d'essuie-glaces de pare-brise comprenant un élément de chauffage à résistance électrique placé au contact de la surface interne (26) dans une zone alignée sur la zone de rangement de la surface externe (24), et un circuit d'alimentation destiné à transmettre un courant électrique et connecté à l'élément de chauffage afin que la glace ou neige accumulée sur la zone de rangement autour des balais d'essuie-glaces de pare-brise soit fondue, caractérisé en ce que le premier des balais (30) d'essuie-glace est placé au-dessous du second (32) des balais d'essuie-glaces en mode de rangement, et en ce que l'élément de chauffage comprend une grille placée au centre du pare-brise (12), la grille (40) comprenant trois fils électriques (42, 44, 46) placés dans l'alignement de la zone de rangement à la surface externe (24) du pare-brise (12) afin que la zone de rangement soit chauffée localement, le premier des fils (42) étant aligné sur le balai inférieur (30) d'essuie-glace de pare-brise, le second des fils (44) étant placé entre le balai inférieur et le balai supérieur (30, 32) d'essuie-glace de pare-brise, et le troisième des fils (46) étant aligné sur le balai supérieur (32) d'essuie-glace de pare-brise, la grille (40) ayant une première et une seconde extrémité (52, 54) raccordées à une première et une seconde ligne omnibus (56, 58) qui s'étendent de la grille (40) vers des emplacements proches des bords latéraux du pare-brise (12), les lignes omnibus (56, 58) ayant des fils d'alimentation (60, 62) destinés à assurer la connexion au circuit d'alimentation.
  2. Ensemble de chauffage de pare-brise selon la revendication 1, caractérisé en ce que la zone de rangement formée à la surface externe (24) du pare-brise (12) est placée à des distances choisies des bords latéraux du parebrise (12), et en ce que la grille (40) n'est disposée que dans une zone alignée sur la zone de rangement.
  3. Ensemble de chauffage de pare-brise selon la revendication 1 ou 2, caractérisé en ce que le circuit d'alimentation comprend en outre un système de climatisation de l'intérieur d'une automobile, le système de climatisation ayant un organe de réglage de dégivrage (84) qui provoque le chauffage de la surface interne (26) du pare-brise (12) par de l'air, le système de climatisation ayant un commutateur (84) de commande de mode qui est connecté à la grille (40) afin que, lorsque le commutateur (84) est en mode de dégivrage, la grille (40) soit alimentée.
  4. Ensemble de chauffage de pare-brise selon l'une quelconque des revendications 1 à 3, caractérisé par un interrupteur de dégivrage (86) couplé au circuit d'alimentation en parallèle avec le commutateur (84) de réglage de mode pour connecter la grille (40) à l'alimentation indépendamment du réglage de dégivrage du commutateur (84) de réglage de mode, l'interrupteur de dégivrage (86) ayant une minuterie (88) destinée à ouvrir l'interrupteur (86) après une période choisie afin que l'alimentation de la grille (40) soit interrompue.
  5. Ensemble de chauffage de pare-brise selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les fils électriques (42, 44, 46) de la grille (40) ont chacun un diamètre d'environ 12,7 µm (0,0005 pouce).
  6. Ensemble de chauffage de pare-brise selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les fils (42, 44, 46) de la grille (40) ont une résistance comprise dans la plage allant pratiquement de 6,0 à 7,5 Ω.
EP94120266A 1993-12-22 1994-12-21 Arrangement de chauffage de pare-brise avec élément de chauffage électrique à résistance dans l'aire d'arrêt des essuie-glaces Expired - Lifetime EP0659619B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/168,495 US5386098A (en) 1993-12-22 1993-12-22 Arrangement for electrically heating parking areas for windshield wipers
US168495 1993-12-22

Publications (2)

Publication Number Publication Date
EP0659619A1 EP0659619A1 (fr) 1995-06-28
EP0659619B1 true EP0659619B1 (fr) 2000-05-17

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EP94120266A Expired - Lifetime EP0659619B1 (fr) 1993-12-22 1994-12-21 Arrangement de chauffage de pare-brise avec élément de chauffage électrique à résistance dans l'aire d'arrêt des essuie-glaces

Country Status (6)

Country Link
US (1) US5386098A (fr)
EP (1) EP0659619B1 (fr)
JP (1) JPH07267050A (fr)
AT (1) ATE192981T1 (fr)
CA (1) CA2138559A1 (fr)
DE (1) DE69424515T2 (fr)

Cited By (2)

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DE102006029406A1 (de) * 2006-06-27 2008-01-03 Behr-Hella Thermocontrol Gmbh Verfahren zur Verhinderung einer Vereisung und/oder zur Enteisung mindestens eines Teilbereichs einer Scheibe, insbesondere Frontscheibe eines abgestellten Fahrzeuges
CN102590665A (zh) * 2012-02-08 2012-07-18 湖南省电力公司科学研究院 一种输电线路导线的融冰电流-时间特性试验方法

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US5824993A (en) * 1995-05-04 1998-10-20 Ford Motor Company Arrangement for heating an automobile glazing unit
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US5844202A (en) * 1997-05-30 1998-12-01 Alverson; Jamie Portable automatic windshield defroster
US5920165A (en) * 1998-04-09 1999-07-06 Ut Automotive Dearborn, Inc. Bi-directional motor control incorporating a defroster element
US6137086A (en) * 1999-02-26 2000-10-24 Libbey-Owens-Ford Co. Vehicle window with heated wiper rest
US6180921B1 (en) * 1999-10-08 2001-01-30 Visteon Global Technologies, Inc. Windshield heating device
DE10003590A1 (de) * 2000-01-28 2001-08-02 Volkswagen Ag Beheizbare Frontscheibe eines Kraftfahrzeuges
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US7783400B1 (en) * 2005-12-23 2010-08-24 Peter W Zimler Smart car ice and snow eliminator
US20080203078A1 (en) * 2007-02-23 2008-08-28 Michael Carl Huerter Windshield heater
GB0918228D0 (en) 2009-10-19 2009-12-02 Pilkington Group Ltd Heatable glazing
USD647084S1 (en) 2010-03-03 2011-10-18 Incipio Technologies, Inc. Case
USD678870S1 (en) 2010-03-10 2013-03-26 Incipio Technologies, Inc. Case
USD681615S1 (en) 2011-02-14 2013-05-07 Incipio Technologies, Inc. Case
DE102011121921A1 (de) 2011-12-22 2013-06-27 Volkswagen Aktiengesellschaft Anordnung zum Beheizen einer Scheibe eines Fahrzeugs sowie Fahrzeug mit einer solchen Anordnung
USD724065S1 (en) 2012-02-08 2015-03-10 Incipio Technologies, Inc. Case
USD720733S1 (en) 2012-02-08 2015-01-06 Incipio Technologies, Inc. Case
USD713832S1 (en) 2012-02-08 2014-09-23 Incipio Technologies, Inc. Case
USD724067S1 (en) 2012-02-08 2015-03-10 Incipio Technologies, Inc. Case
USD720734S1 (en) 2012-03-16 2015-01-06 Incipio Technologies, Inc. Case
US20130312330A1 (en) * 2012-05-23 2013-11-28 Faurecia Interior Systems, Inc. Sealing arrangements for doors of motor vehicles and methods of making the same
US9889718B2 (en) * 2015-06-09 2018-02-13 Ford Global Technologies, Llc Thermal transmission structure for creating heat generated graphics on external vehicle panels
US10080257B2 (en) * 2015-08-11 2018-09-18 Ford Global Technologies, Llc Windshield deicer power conservation system
US9942948B2 (en) * 2015-08-14 2018-04-10 Ford Global Technologies, Llc Method of controlling a heated portion of a windshield
JP7088047B2 (ja) * 2019-01-29 2022-06-21 トヨタ自動車株式会社 車両の制御装置

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006029406A1 (de) * 2006-06-27 2008-01-03 Behr-Hella Thermocontrol Gmbh Verfahren zur Verhinderung einer Vereisung und/oder zur Enteisung mindestens eines Teilbereichs einer Scheibe, insbesondere Frontscheibe eines abgestellten Fahrzeuges
CN102590665A (zh) * 2012-02-08 2012-07-18 湖南省电力公司科学研究院 一种输电线路导线的融冰电流-时间特性试验方法

Also Published As

Publication number Publication date
JPH07267050A (ja) 1995-10-17
US5386098A (en) 1995-01-31
EP0659619A1 (fr) 1995-06-28
DE69424515T2 (de) 2001-01-18
DE69424515D1 (de) 2000-06-21
CA2138559A1 (fr) 1995-06-23
ATE192981T1 (de) 2000-06-15

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